System for matching a new hole in an overlying member with an existing hole in an underlying member
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United States of America Patent
Stats
-
Jul 11, 1995
Grant Date -
N/A
app pub date -
Jun 14, 1993
filing date -
Jun 14, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system is provided for matching a new hole in an overlying member with an existing hole in an underlying member. With a magnet placed in the existing hole, an indicator device having an internal cavity, an outer boundary, and a ferrous ball freely movable within the internal cavity is slid across the surface of the overlying member and in engagement therewith. When the ferrous ball overlies the magnet, a position on the overlying member aligned with the existing hole in the underlying member is thereby located. Thereafter, the indicator means is removed from the overlying member and replaced by a drill guide means. The drill guide means is used to locate a drill to cut a hole through the overlying member coincident with the existing hole in the underlying member.
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